From: Pablo Neira Ayuso <pablo@netfilter.org>
To: Lin Zhang <xiaolou4617@gmail.com>
Cc: kadlec@blackhole.kfki.hu, fw@strlen.de, davem@davemloft.net,
kuznet@ms2.inr.ac.ru, yoshfuji@linux-ipv6.org,
netfilter-devel@vger.kernel.org, coreteam@netfilter.org,
netdev@vger.kernel.org
Subject: Re: [PATCH v2] netfilter: SYNPROXY: fix process non tcp packet bug in {ipv4,ipv6}_synproxy_hook
Date: Tue, 3 Oct 2017 15:28:25 +0200 [thread overview]
Message-ID: <20171003132825.GA11182@salvia> (raw)
In-Reply-To: <1506767115-10051-1-git-send-email-xiaolou4617@gmail.com>
On Sat, Sep 30, 2017 at 06:25:15PM +0800, Lin Zhang wrote:
> In function {ipv4,ipv6}_synproxy_hook we expect a normal tcp packet,
> but the real server maybe reply an icmp error packet related to the
> exist tcp conntrack, so we will access wrong tcp data.
>
> For fix it, check for the protocol field and only process tcp traffic.
Applied, thanks.
I have made minor comestic changes to patch title:
netfilter: SYNPROXY: skip non-TCP packets from {ipv4,ipv6}_synproxy_hook
for the record.
next prev parent reply other threads:[~2017-10-03 13:29 UTC|newest]
Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top
2017-09-30 10:25 [PATCH v2] netfilter: SYNPROXY: fix process non tcp packet bug in {ipv4,ipv6}_synproxy_hook Lin Zhang
2017-10-03 13:28 ` Pablo Neira Ayuso [this message]
2017-10-03 13:32 ` Pablo Neira Ayuso
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